{
  "manageEntity": {
    "action": "Save",
    "entityId": "1054172405",
    "entityType": "Track",
    "nonce": "0x69c1033fe8c2310a74ecaf7850b26be6a7678ec42f95c44214df897a779f0feb",
    "signature": "0xc0beaf52606b6972f133a59a0f4f91a4d87f51fd652ec830de12dbb161626aaf1552f64f17b6075f4e3ccbd28e3224b115e04b4794d2505c1b324ad45b0a73f41c",
    "signer": "0x6AAB6EaEa3f7F15750b649C269b0391dcB19dEeb",
    "userId": "92019297"
  }
}