{
  "manageEntity": {
    "action": "Update",
    "entityId": "505182311",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x80bd1d00a4034df24f4ba86c757755746d2d991d084caf32dc87855af33be0b1",
    "signature": "0xcd57b3339efcacb4ef8399ab377e2b2d32e68c404c51e8c63cf967c460c0bd1d20ac60e9520363f8ca953d43fecb53cf4ef03b43c3d07f65c6773b413ef9bba81c",
    "signer": "0xA819E5C5714510Db532e726DB8526f18026feA20",
    "userId": "505182311"
  }
}