{
  "manageEntity": {
    "action": "Save",
    "entityId": "2044736029",
    "entityType": "Track",
    "nonce": "0xe2f4cdde8197c983028a3866f552ad5225b0987333dc9ea48401eb69e66dc600",
    "signature": "0xca52fc6f11507dc72bc4ece47f6a69d937d41b730d191c99672e96ff2b4252597d082fedd49628661174d5c3335df5a39a00ffdae4a23c15715638d02a1d11031c",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}