{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "956403",
    "entityType": "User",
    "nonce": "0xc5b472abd9fbf8a2fe370eca6443119b46a26395aa5182ace4b1bd0c44ac1831",
    "signature": "0x8b2d289e79f6204704e8ccfe4d013e6ed1a6c05069f60826f68933296f7d4981113c8ea7bc4fb4bb037a7ff48d86cd4a5d5b8ef7ffed9d10d17f586a525a27b21b",
    "signer": "0xe23f94433EED8958AAF9868141BA976B8fffb969",
    "userId": "307915745"
  }
}