{
  "manageEntity": {
    "action": "Save",
    "entityId": "1814543674",
    "entityType": "Track",
    "nonce": "0xb471711fd6d8e7be710cd66f996331ff64e8053b392a94f6b8c851e52c961c98",
    "signature": "0xdeb94191c92049d1e8050febfe82e32d0aa56754595d1e72b00772b587c4103720aaab58fcce6a1405b55e97df8db9f80a75db2e74ab201f9f7a8cc3d3ca66f71c",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}