{
  "manageEntity": {
    "action": "Update",
    "entityId": "839909525",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x319092c771a4793d0deaf4343f012e95a63f8b7d685e361c54c9045e9bf6bba0",
    "signature": "0xbb72bbf5f598b63b0ea404ed45c453edf747eeb832f17a93ea2f4221627cd01e786d5adb4cdb2923798e3581cbb5d1428196d12538d429314b369b1c8430c8651b",
    "signer": "0x1BF18676e3272039E0bF8f2a021954D13cC10a6F",
    "userId": "839909525"
  }
}