{
  "manageEntity": {
    "action": "Save",
    "entityId": "800405693",
    "entityType": "Track",
    "nonce": "1792546592643362940",
    "signature": "0x17a83a511235454ee4473d9c3932f96e9b50bc6e7cde47ae43a517d1109fa4866becb0075595410b94e97a0d3b3e7d69ca1ff75fc3f0ee63eeca666ef96d001c1b",
    "signer": "0x23dF8876fD80368D375d911e3CbDFd15B8e85CB5",
    "userId": "827420993"
  }
}