{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "200080308",
    "entityType": "User",
    "nonce": "0xcca8c8120a2880aebc3f160702723cf2e34d69fc745be0cd9d1e635cd5193c4b",
    "signature": "0x69321e39dad98ed03cc40343210a7a0f5f739bf958a6a088ad54c239389149f937476e2fc319d004408155d0becaec0f6a54de4bcc0042822f080fcab37173821c",
    "signer": "0xc23B5e8f2Ecf23Cb3a24a8BbBC3B82C4146eBE91",
    "userId": "273018072"
  }
}