{
  "manageEntity": {
    "action": "Update",
    "entityId": "383246485",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xac2b9ccbdfb1635dad200fbe0d342e61ba4422d1f2e95b3fffb05be80b74eaaa",
    "signature": "0xf6e50b33eb62d8d563058626e558246c9fe2a576d71e9fa7855414717c26d271361a353317192ef38f36ad47593a053f54f046ab7e9ffef4e2f67f802f5996d61c",
    "signer": "0x8fE23580516ef5596006BBc1541D2dCab23bCE56",
    "userId": "383246485"
  }
}