{
  "manageEntity": {
    "action": "Update",
    "entityId": "479039338",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xefae1956be8bf305f004828bb168b94967cd606c85c3eb1e55434791567b4c22",
    "signature": "0x4114572064573b9c5556b007b33908137a5b99886b75686d5ce74fc6055259304fa3c7a424af75bee52002f2b1e601d61bea1d41485f804b60bc1c56831e77031b",
    "signer": "0xDA5EF39662B4ef70B52C25F33b5637165C93DE3c",
    "userId": "479039338"
  }
}