{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xc51260a00f1f4a751096c7fa278ac63bad968cedae1f9539e7f36ec914cdd247",
    "signature": "0x3ba219ec3470bf0ebd8aec1c579488596361535e1510bd25c83b5cff91e5fde77bcd7e1003e77606692f24e45ef00e0f780f6f5ba938a1beb16e03f3145f16d31b",
    "signer": "0xC4e201BEaDD3933E76e562c99f9F367Ced3f68d7",
    "userId": "533673360"
  }
}