{
  "manageEntity": {
    "action": "Save",
    "entityId": "207622",
    "entityType": "Track",
    "nonce": "0xbdd69f16bffc17a010e4fb7496d9f1941aaa76cbd0d0ac26197b7576d04bb5bf",
    "signature": "0x377b88a2dde5b796a2d1594d73d3a1f6d37aa3d6ff1d8257082a1485b764448e10e0fe750aa61acfeaf484f0de1cd081ce9d1929305fbe351ee9aad96bcd05da1b",
    "signer": "0x1d868e2cc29848871636BdCF83a08A975835b6DD",
    "userId": "120328011"
  }
}