{
  "manageEntity": {
    "action": "Save",
    "entityId": "1825644135",
    "entityType": "Track",
    "nonce": "0xa295423319f11c719f295adc0b183682abc25dfab02625ee4ee332dc19ea2e17",
    "signature": "0x9fd7b7da8f5a87e25dddac70ff03b23aa66c08609bbe66380a2b75e1c6e741197138e08ec91abf52b5fa8a318eadee3a91a416422be9359cb128e5c0f42512b51b",
    "signer": "0x59765b22C96E88dA578af23E8611d6ca2dcCd7C9",
    "userId": "377610060"
  }
}