{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "77551267",
    "entityType": "User",
    "nonce": "0x52a4c7bc799c3e6e59b95e78f9ab4705e5a36628bd59a374dd5f9895ceb1c64c",
    "signature": "0x95d0871f9e7ebdc3e11dc41e8630ab00d306c9f88866be7fb512296fa33dfa8b259c5007ee1d9a99357747acdc8c8e772b93612d24f2058cea2244db7d094cdd1c",
    "signer": "0xFe4E972E3ec8D8d619816F5644f74CB5bA1B01b1",
    "userId": "219239808"
  }
}