{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x9a7c1143a665e4cf090489d71cf9d79d395f7c59c4c8bd1ae16323116285cc9b",
    "signature": "0x4b6a7415b962e1b609c308d8c87a95a3785e5742fc8b36c6ea58d88bddb4bf337c0321bc629ee9aab7641ec548a186d9e2cd222bd0c927a17d2453a8b84ee1591c",
    "signer": "0x66310c3C430B9B1A2eb38D9c85159554D3C9D4C7",
    "userId": "823577399"
  }
}