{
  "manageEntity": {
    "action": "Save",
    "entityId": "1024244",
    "entityType": "Track",
    "nonce": "0xcbe5f6aa2d57ef56298fafc9f41c65dbeff37627299934e69a2e1036f68b4611",
    "signature": "0x811bba7ebb05e56e5d48afe502ffe4550c687f4aff21a7af9caf697df8d6cbc7585aeb483d4860db714627f53bb8bec03ed40b8bc27271b618a12be8e589e0581b",
    "signer": "0x26Feee0AaDc0e2d8f7aBEd5cdb0bCD7D325F618d",
    "userId": "354535"
  }
}