{
  "manageEntity": {
    "action": "Update",
    "entityId": "728219083",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x76b89cba6d30366d67e5eb883ccdf74c3489c47ac5daa423f25b18cc0af192cf",
    "signature": "0x5cf49da6c2fbb94992e1af4afd73b4f4fca15f5c1d94d94cffb12e49d95f3c2c5f7a515723873d6c279813af64c63c18e7dde23ca0b7634e2812138a532dd9b51c",
    "signer": "0xE87Ba82e776176017Fd20AdD9B6CDaA93ded631D",
    "userId": "728219083"
  }
}