{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "200080308",
    "entityType": "User",
    "nonce": "0x30bed5d3f142131ca5443c217d188fb3d56a70a331d1dc40c15c28e444bfa865",
    "signature": "0x6c479d54139b932c7f14e10c42f50cd8b9335ab92581203f2d294b28acfb71f93a309ba66ab546bd7467490a7d2c68df64840e86021fbf63c0e6a2a88f0dbd8a1b",
    "signer": "0xb001DCb64Bf57b3EcC76C4Fe5AbfE2a8B084D6ba",
    "userId": "641557420"
  }
}