{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "352508",
    "entityType": "User",
    "nonce": "0x564a348f51bc49ac16c997d566e03450ff949a9def36af0e75a339ccceb6851f",
    "signature": "0xecc6cd02a3d89289bd55d8b334b15e3a5ab052ac5ffc825df62ad6f894d9c6062ef879b2653aa00e5268b0856cc690ceb474d69e183718a7976dfdafd10b04bf1b",
    "signer": "0x45c4f1dcE13eeF476C74C5758696D56137253980",
    "userId": "824478223"
  }
}