{
  "manageEntity": {
    "action": "Save",
    "entityId": "2024932559",
    "entityType": "Track",
    "nonce": "0x81e547a01c2db22b440d529165813d9e75178af29166543d17fd1b2e647d90ea",
    "signature": "0xc42a7afbd98842456d205cfa239a9bab279d2749748846d505cebe3d36bf257c123eeb95943ed4a2ef5e8473803799f0473b8e98f0a6d9a3dbb206d92759d76c1c",
    "signer": "0x03e9Caf2aeac5a0F0e4Be56410d67A4148D38Fd4",
    "userId": "47828528"
  }
}