{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "145958",
    "entityType": "User",
    "nonce": "0x34d7350e794eaf6d45f9d5eb6daf7226531c1ff430b47f9050f74f6a95607845",
    "signature": "0x71695c1a3ac2ea8724f6c07550fb5328475cac2560f7a90c0475bd39a5ce2dc27c7b8ba4d55c01ed52a4a2f652f737446246329d4f3cd20d85b3e3c8b72084da1b",
    "signer": "0x55F8937EF7902E83b15F5BB7c7bf72a0a2989C54",
    "userId": "233666542"
  }
}