{
  "manageEntity": {
    "action": "Update",
    "entityId": "721987098",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x11953a96890e81c52ef93cd3a248f052462f314f3db28832fb03932b12b897d6",
    "signature": "0xfa9419ac8eac97182342adbfb6e0ecdeb24d53d3a5a8a8d9f2c57c1cb87604621ed2cea2ec46b12d8f536adc54aadaa98e3ce655b80d658504fde63191eb7d001b",
    "signer": "0x4c2B6D597D288449d9F215489E66f1cCe1c85B8F",
    "userId": "721987098"
  }
}