{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "742786650",
    "entityType": "User",
    "nonce": "0x90f0a59da511717a14e80c35cec01f9a296b6bc7a75755ec418f06b5eaebf84e",
    "signature": "0x97e0a32094080e270552b9ba73aa7d69e0caa7068d180f8248b08d009d9caedd270cd9f9f8093751a39db2bfdede660d59dae5eade476e150e439fdc7dc94d451c",
    "signer": "0x9765cbE8e26a2c6c4847C1B69ABeB0B5250EC254",
    "userId": "678556080"
  }
}