{
  "manageEntity": {
    "action": "Save",
    "entityId": "1075785",
    "entityType": "Track",
    "nonce": "0x36871a9f2cb21a7783e25bca3c84e4e258db27db201bf3daca71af0a4f7e4714",
    "signature": "0xecf8aeaa2464975f2147bea57fc6e701c908d782b1b1583a02fef3af4bc534251dfcba0d3f0cc948cac623e1ff30e2cde938e5e8ab715b0e113341520c3c6c911c",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}