{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "213208842",
    "entityType": "User",
    "nonce": "0xee3284c4042306ba7917a609640111632da8088786786ba6180501347d33b19a",
    "signature": "0x3b741c275a15fd8673cccf2823e7b186257549c6d94dec6608565f0302c87d0a0bd90de2e4dccd24dd76025c6dcb9cac70426c58566dbb3372cd83a14cfecbb21c",
    "signer": "0x48FD75f1b7D81A96b8b8624aB7040523C402c202",
    "userId": "325172820"
  }
}