{
  "manageEntity": {
    "action": "Save",
    "entityId": "2059114646",
    "entityType": "Track",
    "nonce": "0xb94046a4bdd1941944930fd9a088cd39a55b256383d392a0c7f46aaf3f8c4434",
    "signature": "0xbe12caed163bb414c751eae4dff1b908d01ade86d6f8420b256c3ddf8a6625fa68287c3c5e1e83419daede735c1ef5ebf9af9515dc70a72fa32765eb709451011c",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}