{
  "manageEntity": {
    "action": "Save",
    "entityId": "1852857053",
    "entityType": "Track",
    "nonce": "0x4f1175baaac2b485cb8f7c6d63d9ffc50124d05ebd99c026f5574558abd38b0c",
    "signature": "0x105fef6f04aaae28ee73d8add5be3d60c825a7025c97079dd199cfaf843af4946fbff686c6d3b98082e1a60fbdf848184a140f4d1ae83801793175eb721b1c2c1b",
    "signer": "0x1d868e2cc29848871636BdCF83a08A975835b6DD",
    "userId": "120328011"
  }
}