{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "122891",
    "entityType": "User",
    "nonce": "0x95a3dd1516547f252d07517cd93c89ec8a5795e8438427719c606384e15947a2",
    "signature": "0xecd025f8b494dad5deaabe3c2ccd0c096b5aa3a74003ce1d37cc466483b180217d597ba2f35762d0cbce88ee16a69f31f75ac785225f2342a11570640355865b1b",
    "signer": "0xD24271e3B8CCFB603860EA392E94eD5AE2538703",
    "userId": "456716469"
  }
}