{
  "manageEntity": {
    "action": "Save",
    "entityId": "2073802229",
    "entityType": "Track",
    "nonce": "0x403727ed034d74d524abe401da6edffb5b162ffe6e615cc0192c11e808788f50",
    "signature": "0xc6301f51cfb106d315fb11bc95d2d848edd23a566d20d5f787c3c890a2726cda6a5e54a32fc7841fcae5079e5f709a568a951aa0eba30b517ab278eb5d8c90c21b",
    "signer": "0xDC5D8e6d43489811098d4d3D31fB7D6585c9Bb31",
    "userId": "735980234"
  }
}