{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1479694",
    "entityType": "User",
    "nonce": "0x3b5a898953445a7cc203e8e0cef0c632bb2d21c6f489f2b774a17b0afdcfdc48",
    "signature": "0x715c38d8bbcca359a1eb4ee43cbe11b154b389fedcee18e48f34df30a34d39033a376447d0d655338095ba90b7caa691874cca589c10e408f02852d988593e8c1c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}