{
  "manageEntity": {
    "action": "Save",
    "entityId": "2024413927",
    "entityType": "Track",
    "nonce": "0xeda908e58700a2f9b37c4be55309290f4a386f7a6c5e8f06d2017a0e2e4dcf46",
    "signature": "0x3aaaef1fa4c54c0531d34233f6d0a578326fdfa905624dd149d37e413138a770267e50597cc1145f3792415fe8a867705536a1ba1cd9e5eec929f25a8bbc1b971b",
    "signer": "0xb51B50C9b7d88C66d31539161F4BA9Dd72a17dF5",
    "userId": "465531556"
  }
}