{
  "manageEntity": {
    "action": "Save",
    "entityId": "1007516",
    "entityType": "Track",
    "nonce": "0xe19dde0ecdc6144805464dcb99afb9c2d5f735b8858655dbbc0d3af45e955ad2",
    "signature": "0xfd145be2a47f9cfb55192364a7fb60b9b8198e326b14d81c6b411f6ec90b97d173c5aaa7a67e82824078d928bf3b213268f51e56c2cb66357222f8b6c419b7271b",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}