{
  "manageEntity": {
    "action": "Save",
    "entityId": "566236",
    "entityType": "Track",
    "nonce": "0x827211992558b1ac19e0792d417905b5204b2a56ee7b636bcab0dca4fd8cfbac",
    "signature": "0x5c02b09dc468930c9ab98ebd0361875accd5cabe971966d78e42d8b01256ed696214b67eab089c558a08b1e8998ef32b32e930840a52816e6288b79c865d01fe1c",
    "signer": "0x03e9Caf2aeac5a0F0e4Be56410d67A4148D38Fd4",
    "userId": "47828528"
  }
}