{
  "manageEntity": {
    "action": "Save",
    "entityId": "1067164370",
    "entityType": "Track",
    "nonce": "0xa57d711e76b4a6921c5817ecaeea5bab10fb29c7c23dbddc4df61c5a2c542e4c",
    "signature": "0xa4a9149a83bc61304cc20508fbe867fe58bc650e1c2799145bcd02e4ab54c70c4cd6a0c5cc6344e754b01576d656e2bae636b9a010590ba8e493001a1ef1e9851b",
    "signer": "0x36d29AA5C780341f3b35bDE6c1411a7Abcf8794C",
    "userId": "571117272"
  }
}