{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x64f97ecf1f1631e0ee9ca0e9d7706499c4513dbc5ebd410472c5c9f012bfefdb",
    "signature": "0x714f9eb05c189378cdbd18394572d86d79bd2726afda8df76e3c6fb12bc7ee59379c23d2c232c3518a584ffc387449db833edf868c87e1b449175835c72535c71b",
    "signer": "0x17377E4Fa094Eb9e41fa2D81D3dD9E9558561A4a",
    "userId": "879475605"
  }
}