{
  "manageEntity": {
    "action": "Update",
    "entityId": "37684323",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xfb7d72cdb19dae56f658735f1c1d37f6e833286d9e7835b2ad11932898f0c9f8",
    "signature": "0xe2c20fc187f768d367a96c6cc6f14f81b84b1475b631b16b44a5ef17fe8afc3557af49b75c9b45628fd094998e1d9b306c61550da09cc9fa2da9e2cbb974a2131c",
    "signer": "0xca49c4376F1D495D19DCA58991553F1fd0fF05AB",
    "userId": "37684323"
  }
}