{
  "manageEntity": {
    "action": "Save",
    "entityId": "1319912628",
    "entityType": "Track",
    "nonce": "0x436f0233d027fb45efc27b30e8783c12c91976ac097f23884632c2df6e1f1bfe",
    "signature": "0x825e331bcc75901df07ccf2a49d5cbb0f01f5ef88ec7b37eb409d7452adfac5e6e48515daeab1091aa16fb78c984275a318042d254b94ae6596ab628625b1ea71b",
    "signer": "0xcdc1772589e70ee6667FAaC93E3F0CcD5BFDa2aE",
    "userId": "354908"
  }
}