{
  "manageEntity": {
    "action": "Save",
    "entityId": "1661417936",
    "entityType": "Track",
    "nonce": "0x326bce54041b7e53c9e34acc884a490cf6f0a754832117dc2bef355bf519cee0",
    "signature": "0x086fce960ab1b8b5bcab70f3a24694b41d8f0cc44e042b6af2b04e6249b3d4104ee3cb7e09f900f019e7fd23fa448826efcdd80cea3ace8b72801b3032f8022a1c",
    "signer": "0x26Feee0AaDc0e2d8f7aBEd5cdb0bCD7D325F618d",
    "userId": "354535"
  }
}