{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "734659738",
    "entityType": "User",
    "nonce": "0xad10986651941fd84b4ab7f1298e78004db0aa9cd3dae8761d2b46f3cc4c222e",
    "signature": "0xf2172b4ca613036f96c15f2636b6193ad2519f0ebef2bf69e675adbdefaa53c47bc532bb0bcf32f097aec1f13532552e5d8ea06a6a25127e9a140643cde512771c",
    "signer": "0xC7B16Eee24C03712c67aa884907593f4df23db87",
    "userId": "56534466"
  }
}