{
  "manageEntity": {
    "action": "Save",
    "entityId": "1306676182",
    "entityType": "Track",
    "nonce": "0x8562020a098448a9c8c520092a74ee3d0dfffba4e4ecf85ae7e3c680edfda0f0",
    "signature": "0xc47fa3f3024c6d0314065aaecc892c1b53cea4777b06f474fb5e85b3a1cd0a6c1eae698b431c0e2eef2a09f1fd92c3416d5e6c6a04e46f8ad1212fbf714813e11b",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}