{
  "manageEntity": {
    "action": "Update",
    "entityId": "971129804",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera52uxox6c2ulgqmjkg6ntiqudktx4qnaeyyh5pzq67ttc26enwfwq\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":940553898},{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x8c781e737f0bbf8daaccd508d9085e8574b21215ad178b0944b9d6e81a3daf47",
    "signature": "0xc81cd5c7c3c89fd6a741b9d7afcd4335dcab7e0974efc25bc72caaae2e19201f056324a4990028c95fb21c8d037ab12f08e461bc6aa50fe2dd84176155ea01e71b",
    "signer": "0x3e48DC5763519fbdE0A26db7C59929E8Bb6B8Fe2",
    "userId": "971129804"
  }
}