{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "144715",
    "entityType": "User",
    "nonce": "0x0e616c78aa95dfee40a304b704b3a04a9bd9861abfa9472f784ef6266654ff53",
    "signature": "0x0caf107375aa22bb19d14d905e8672bb3575e5e8003ccd5f5a7542bf5ae69f6f0dd81fb6db63cb91fc4c130221c80d54f1ac5c4b7dd94b9d88f864f4492f8fbc1c",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}