{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "580720856",
    "entityType": "User",
    "nonce": "0xd44033bbaa3cade18c1bb6d7c86f260fbc5b92ff570987d027e8de2c1c8de0c4",
    "signature": "0x393ed94613782ba7e49e9f2a76ceee807ddd72923071a60e6e844045ec9ba8036e4acfd7910fe9e9e6114005ef88e8924ea1fabc550b5514e37a5f8a1554ac301c",
    "signer": "0x59703Be510759288E02691dA4939360e8FcCd725",
    "userId": "38568"
  }
}