{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "843",
    "entityType": "User",
    "nonce": "0x9c7c567e334c1a05d606e2f837735a26f96f3dd6e6447698a964c10d5668c6c9",
    "signature": "0xd450f79b31c4b99a37e1ceb6d3cfd5dc06071c7c0f5f1d9f402b44ebaccfd8bf5e979fb86d052dc2dc55f3ccd6218477d9c3b8d8077865501d4e4713218fc3cd1c",
    "signer": "0x5fa60F185681545769de01098bB8F29cfbaE3cF0",
    "userId": "489026160"
  }
}