{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "775959",
    "entityType": "User",
    "nonce": "0x86d7649f63d79035219c278a01df365cb81720af72b08ee6f34070b59521a7f6",
    "signature": "0x359768fa9d428cbd239eb5c998afa58f1de11203fb38ff45c04a161774f0a71b37f24bd03ad195152d0451a0bd0421b41f3741247674a4b07759daa9b382713d1b",
    "signer": "0x55F8937EF7902E83b15F5BB7c7bf72a0a2989C54",
    "userId": "233666542"
  }
}