{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1873428",
    "entityType": "User",
    "nonce": "0x6ef4bc601a108f73ddb7d87c4d714c9d93d9560fd2d13b2bb0aeacf117becd1b",
    "signature": "0x0cef78990877fc345c566d1536c4191534c10fd4e777c78775d6cd18d116708f731b8015b327eec39900c8947f0b3c62739d30aea61d907aa172aff8aa20f91c1c",
    "signer": "0xcb5D87789Be7Fe51506A9D53b24d9D9dF14BcbC5",
    "userId": "947956805"
  }
}