{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "200080308",
    "entityType": "User",
    "nonce": "0x3f64d77b755ed767c68fff23531ab7156a0727133a1d049455003e80f283a875",
    "signature": "0x3de159977c410b3d12caa7c9a1d4997b6914febbc95c747c13e4fda4e9f1b84a23ad01cd63a3e0357f7957ce735a8ea7b8d9821603d62ea3bc6f7819d4bc1e7f1b",
    "signer": "0xad12A53B30a86D04715B5663c5832Df6E2Cb9710",
    "userId": "980941"
  }
}