{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "310841670",
    "entityType": "User",
    "nonce": "0x5e864e327336f605c6f20947857504b3242b05783c48861a6a0ee84bd5628fdd",
    "signature": "0x54a6e0f9feeb135741070271a4b7c7326b3acccd6da20f7d70f80d80e5f33cfb19f9115606becdc821db2f457cb27c44c4b536cc688f24b21992f80e51cf56a21c",
    "signer": "0xc7666bC2c39733fdDAC1b51E6D48C98cCadd0142",
    "userId": "705096688"
  }
}