{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "117930509",
    "entityType": "User",
    "nonce": "0xb677bcdd1b21b307d7634945a06a8af461f372f4c492964c225140866f7b2d04",
    "signature": "0xbf6da20a62b0db97380996ca32d109bb8ca54405ee390251ee0b23bebefe2a9d1cd89014f545b6380482bf8af3c07dfbd4cc22cb65281dc49935e75f5e10b4f31b",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}