{
  "manageEntity": {
    "action": "Save",
    "entityId": "978095",
    "entityType": "Track",
    "nonce": "0x83dbff2aa835a35533ba7a4e1effb72ee5fa4e3921ef66dd26c6480b5d613cf8",
    "signature": "0x6b47c01ae52bc801edbeeafdce9ef440825f803a3ff5ac0378cb7ac9581356d77a5ad30e0e35ea584b8e74481a15f11f47e6e415eed499a6b12716ddd2f6a02b1c",
    "signer": "0x1d868e2cc29848871636BdCF83a08A975835b6DD",
    "userId": "120328011"
  }
}