{
  "manageEntity": {
    "action": "Update",
    "entityId": "319660171",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xc4982da01a76dfed37a038ca8266ee0efe498204cde3709d99cbbe284d576429",
    "signature": "0x20ada515a50403302cd4e9f75b11a63c1b5779dab67480e36203378858a8003f548d27f409ab58faf59698b873fda5bdbeb3abe879bd3644f8dd1003a38898761b",
    "signer": "0x6A88cEec482B13F82D57903a21346484C2207875",
    "userId": "319660171"
  }
}