{
  "manageEntity": {
    "action": "Save",
    "entityId": "2096741993",
    "entityType": "Track",
    "nonce": "0x1110772d4923c081f37d4ea271f7895fd46f363c090d552dc4e0f4ab6867574e",
    "signature": "0x49720cf6815528de412a47cc02829bbbf8218fe7c0cce8e923ed8661b761bff53f3417e9d69f22422b7d3cb7ce49152be853bde654a9caa8957dbe9d5b9fd2ed1b",
    "signer": "0xbbB98413eB671bb0000F0b18A2A7Cae9631043E1",
    "userId": "98311147"
  }
}