{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "745382175",
    "entityType": "User",
    "nonce": "0x7e5981e0f45dd7364722bbc6fad783b63f88856dd03d3e92f0d1cbbdf912b16d",
    "signature": "0x8ae1cef7b5954782a4f86b379ef89158ecca75c806319afb8a8fd08e2c2cd7495fd3382c5fcb365c7d38fb2279faf5696584e6473fe4577b95604fde381325a21c",
    "signer": "0xA5fFfA5b8673Fb93490E3F9B0BeE58e1f0Ce1231",
    "userId": "508186998"
  }
}