{
  "manageEntity": {
    "action": "Save",
    "entityId": "1005948",
    "entityType": "Track",
    "nonce": "0x9b25e3a048b4af471ef72dcce71642ea2df6d9dc1146c18963c64359357b6c52",
    "signature": "0xecb45ea2885d99a721d89267a3b382559c6956624aca9e24f734e4c35f84610000260dedc66d7cda6bbaf33960077d3dc31d454c6d613ff565eb968ae970a55b1c",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}