{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xb1b817a18eda5637d8468e68e385affb47b507461656b0aba2fd77492756360b",
    "signature": "0x408aed6bb1d15793c6b923e58fc353aad53df5b34198b2c9d5571c5e79aaf761057ad6b1e1c789169e7df72df0a4ff7ac4a77f3649bbf4571b58ee0695b30f751b",
    "signer": "0x269d38990157c8594DD7ce5b8023dA6Efc67574e",
    "userId": "643711059"
  }
}