{
  "manageEntity": {
    "action": "Save",
    "entityId": "270052733",
    "entityType": "Track",
    "nonce": "0x62d3a49803b1ffdf499694d0d2d7e5678be3c4f4fb4b965935e396e9e111efea",
    "signature": "0xeac86f9f2e04b9aac20e14074410358c28c44d07f99d3b8c69236db38d76c916181c206b6fe94f541b965ca75b178af9adf5aebbaa6060d64ed86e8db4c9a5ed1c",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}