{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xb0542cb79703f9bc7ff9a6271c1ca3007f7ff9d427615a790507730a5e9485f5",
    "signature": "0xa67486662f8aaa28a605079a25ff41e05d7ee46b0c62172bc6c3cd635fc7d771140b2dc49347689f8540c65833a6e1d97731d7b957cd7e4bfd06e6ad75cbf5e41b",
    "signer": "0x481a259Bd7a86786e0C95639CB4D9A488b8671f8",
    "userId": "55623874"
  }
}