{
  "manageEntity": {
    "action": "Save",
    "entityId": "1215682982",
    "entityType": "Track",
    "nonce": "0xe122361cfa2a17cd84c231d193dac10913a9474b08a9dbaa7415d0974e667e4c",
    "signature": "0xcaafec5121f5e8393656cc1dfbc73b71e5460c11548155804323a134fe2277190cc43aeec28cfe3e34c1809aa82a1d2f42707ab622a5f19772c9ec293efba7691b",
    "signer": "0xca9222f1aedE81bB652753be5E233B18473E61E5",
    "userId": "9780"
  }
}