{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "320968767",
    "entityType": "User",
    "nonce": "0x7a922c7f6a4a2be003633be7b33bc2d721501c7c496e240132bf144abb89b8c1",
    "signature": "0xfd2034eec2159bdd8355633411fcedd463d0742db2bf1213d5808236878aa32e065d30b6e6752dbc1d5feadb988aa821315a03017a30edd770530c7cd91098fb1c",
    "signer": "0x8d9C3422B8A78bf67B64E503D8d5bC1f316863Ff",
    "userId": "446019415"
  }
}