{
  "manageEntity": {
    "action": "Save",
    "entityId": "1102127",
    "entityType": "Track",
    "nonce": "0x630cd5101a6e551827f2b8dae18a81bfc82bf97495b34067fb7e0cd98b34eee2",
    "signature": "0xf299015051c7bbbb0101d1cce85b018defe7d396c073318b0b0cbc0fa3e79a04453f3e5907943757c884167186d1e5a1642508e9d2354b385c34817c8023d9471b",
    "signer": "0x84B42609E987DD0953e02498E61987fB833B7C92",
    "userId": "887547386"
  }
}