{
  "manageEntity": {
    "action": "Save",
    "entityId": "1259775604",
    "entityType": "Track",
    "nonce": "0x59808857adbd2fb0b1e3fd9062c6b79aff1196cc510314a7573241d3167595fb",
    "signature": "0x6bc03911a8e5a271181e2f410ba70ecb9a21bc7f9a790c9696c04c00bee410405092c1035ba03c141180e04c792d66c452f715f78da5412d54f5bd4e904953a81c",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}