{
  "manageEntity": {
    "action": "Update",
    "entityId": "549681063",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x5f9dd5140fe9084874dfafd33621846a751b21709877dc4ed8472b89e9f8f970",
    "signature": "0xe3d78263a77210c267178a7c8ddd36e9b850fbe5f842323f79df812f91759ddf41944c256e490ce06d25c20b9db88b7f863e37ed13fc5aabfcddefde384cd7731c",
    "signer": "0xC8b8a00690dE486344647d491eF0A4eeC0cA2788",
    "userId": "549681063"
  }
}