{
  "manageEntity": {
    "action": "Save",
    "entityId": "1106501",
    "entityType": "Track",
    "nonce": "0xa15a2b4a2fd61678cf6ccc97a7a1d914a49338f3fe2661350d9775a1ee18fdb0",
    "signature": "0xb5be3f2e32c3f86a24f212261afb7a3e1a9986dbfc6c68275234890c45a1fe31435fa56b3bfdefd0d95729b2a2b2a74035563885b55ba953659f1888964bbadb1c",
    "signer": "0xbF4F1f4df4779768AfE75515b1552a2Bc5b4Dd32",
    "userId": "100976759"
  }
}