{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x881397db46e7f28e7607a950a641d2a898ea0bdd9a00d327233becc8e7e7cc89",
    "signature": "0x715f0d78988cc8ee39d452a18af73beddf3900b95c16e6ed5fab4b2a5354998730431f4947ffb3b0f58c2722a77e9b485090d61d96aef95aefaacd712efa00af1b",
    "signer": "0xb96A043C17834B8F85ffC7dA5AD7ad77457a0540",
    "userId": "33390898"
  }
}