{
  "manageEntity": {
    "action": "Save",
    "entityId": "1091156637",
    "entityType": "Track",
    "nonce": "0x999c161438ee814ad2ee7107c3111adf25a3dbae03a03017f2c7b56e3c2aec54",
    "signature": "0x69871fa4e2e095891fe2d5e1b9b8605752074a5b6d179149f0828308b3a025b60c86f9cb9034d87c5ede67c19f381f22a0e3d09ebbb2512176f7e1b7264993b41b",
    "signer": "0x84B42609E987DD0953e02498E61987fB833B7C92",
    "userId": "887547386"
  }
}