{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "193889654",
    "entityType": "User",
    "nonce": "0xb6c7b04fc4da0349684258678895e4aa7dfa448159962e980eb6789b0419d3de",
    "signature": "0xce6a9f126674e01c8d022947a50120ed858da0bf503b8e2cb5f6b3c787eaeb1453630a34a732a3d0dbb9561c8a1339b3370c16bc8c32910ea3286817a74ec7841c",
    "signer": "0xA5fFfA5b8673Fb93490E3F9B0BeE58e1f0Ce1231",
    "userId": "508186998"
  }
}