{
  "manageEntity": {
    "action": "Save",
    "entityId": "349160",
    "entityType": "Track",
    "nonce": "0xa4a69505a22bdc74c5c803ad86922fd4faac10dadd98f789b304f060cef6d80d",
    "signature": "0x567b1b79ee5cf22a93a06a58b4a9a016da7d1490110279f3cff1ce5938d533fe7be111401bfd497be9bc3037162f06265d7c4308fb2791d5cf75938e6599e5cc1b",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}