{
  "manageEntity": {
    "action": "Update",
    "entityId": "199516921",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaieratcvfnssymcpp5rdffamsxf2oy6oww65kdgvr3swcrxzzohopvgjq\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":631542371},{\"type\":\"playlist\",\"playlist_id\":1638193401}]}}}",
    "nonce": "0xc05e03f3b21b1b175ca93ee8875f597c2cea60433986fb4032088ad0405b0e3d",
    "signature": "0x0aaab8af83b7dce4b68bcfd1239ef8d6d5c59ed231d2c7152dee7cc6920db2450060195437cb782fa8dd1066c32371a95987fd9b38831dbd5cca77e7c2e4ccde1b",
    "signer": "0x49A438454131D4e8F2A2547287Fc46167b168F47",
    "userId": "199516921"
  }
}