{
  "manageEntity": {
    "action": "Update",
    "entityId": "774001949",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xb87a2923e824a570d159fcc682e37e64b5366a82a58f947502581fba4385a56e",
    "signature": "0x844d084723c69e1f22c4e2717997d175b94d9d7219f1c3856da8bf715b0f43a1147d5dfc3c0c267ac4b85cac4609e9a9c42296fb61e74abc34c943f9e299f2c71c",
    "signer": "0xaeea4881a0dEb0589a66aD6A4A894BC6F75603DA",
    "userId": "774001949"
  }
}