{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "236663789",
    "entityType": "User",
    "nonce": "0xb96a4d9dc8cfb521024d8791fdcaee0427fc258c158aed22e5a950344268d01e",
    "signature": "0xd73633b4e6d79d8276c079a80cacd02fad1c473f43659cf93b8ea5716c51caed5931f3b91f91a4fd69f170fadb8651b63654a48d544fb70c2e818a66580742cb1c",
    "signer": "0x5452f86EfcB1153FF9C10bdbe4103Ce25434D124",
    "userId": "620307004"
  }
}