{
  "manageEntity": {
    "action": "Save",
    "entityId": "1662088015",
    "entityType": "Track",
    "nonce": "0xd5c7219d397803dd6d3d3a8e98b2b71ecf92da8064d951b8fc8775bcf51ff047",
    "signature": "0x808a3dbaaae53d5c5f95756d6aaa17c858d0f3ef2da713db600edd97ef890fa73d3ead2677d35e4c7c8088dd730d9ecb8fc1442359f553ae9510b905b57e6e681b",
    "signer": "0x9cC78fE5F75781C73C1C6D67045d681C8a4C6c9a",
    "userId": "149429484"
  }
}