{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "728570067",
    "entityType": "User",
    "nonce": "0x5c015cf61daf01100bcb4f3d5ae2455982195bcc12aeb0cdbeb1b823fe4ee111",
    "signature": "0xff1f6a70e3a7025bde4eb2093c6b03f6e03a78a7da7623800226d4b8ed355fe954d945e8cffe753bc17a2255123f3b08fd6cdc817c6a5f31dd113ed1543beca31c",
    "signer": "0x14fa63A530B7d9254d20B110AAc25ABF49fbfa9d",
    "userId": "182428"
  }
}