{
  "manageEntity": {
    "action": "Update",
    "entityId": "383345687",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x429b86169dc330fbfa38772d70d2294046b97316265fcee47054903a969367f3",
    "signature": "0x13368ddf2f1e0add64aba6701bd727b5226d428c35ab94a67bf6995ad53e794c65224d623f2791e8c625fc16b4dac04e10d4092c52d5e7341e04143712bb908d1c",
    "signer": "0xd39c7c8C60fe49BAD88aBF9f1d67C155dF14A368",
    "userId": "383345687"
  }
}