{
  "manageEntity": {
    "action": "Save",
    "entityId": "1798384756",
    "entityType": "Track",
    "nonce": "0x4591da8827e0aea134ce8daa80fec03148356b3b94a137c3b49b5bf87acc50b4",
    "signature": "0x26a796f0cb592b6ac5d06dc5e35f9d83789aa18d24e8956d799a34a5f231fb6c73353215096ec9671551d4f97bb50add4d1a5025e5483e13c72644933e020e521c",
    "signer": "0x7E7b9c4DAC3F284d889a5bc274eA80b8BA5F63ee",
    "userId": "670307808"
  }
}