{
  "manageEntity": {
    "action": "Save",
    "entityId": "1718135329",
    "entityType": "Track",
    "nonce": "0x23b3a0bd7b9ef02de2043c7cd835a20199e1cf2c1393db65223aa7276707a900",
    "signature": "0x9d1b5e47d69ed6aee22041140c4edc73189821837bc4e522959400bc05521d161dc851976858cf88edd317aa26ee40c3f2e1ae3e603e734c6889ae77db51ab111c",
    "signer": "0x27204C77Baa4a510c92A96A4ba3661CC53EE568E",
    "userId": "35918963"
  }
}