{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "100393",
    "entityType": "User",
    "nonce": "0x9e6228164672d156a9a6692bc533b7ab928c1ecd45a4cb45ae3631f323a1ada2",
    "signature": "0x507642db5dca441df378f9fae808253f6e10cd2c8428b391b2107564243db87b0b2c697b10e2d56ffb874007d16f793a755117f072cb88292acfed47c9e230051c",
    "signer": "0xC7D69243b2161915036b32017e4FC8ea02d7faF1",
    "userId": "80378"
  }
}