{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "990579",
    "entityType": "User",
    "nonce": "0xb865443e7bfcb7e7d7e50ea9779c388b0363a313e4221c3746127629e4b788cc",
    "signature": "0x27a099d11cbf4213e73e47d824dfaa4d121fe4c6e36d2274a2b815ddb729c5611d378b38d5cf5cdeaba07e57893d4cf85ca121e1fb33d8052aa02d60c047bee41c",
    "signer": "0xE8Ec1bAC66ca573950B30a9B5Bff2793f9CC5C29",
    "userId": "734516636"
  }
}