{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "512214950",
    "entityType": "User",
    "nonce": "0x8e8196a4d03590225a50c11791d74869b88329351d5209f6458cec707394914f",
    "signature": "0x13e81b90d5c25c87325aba4a2d656522c2d5bf4935975671ef06a3d6b0a16c0738d58101422af758cb8cb5575ceb4054496c570f249f14e2d77d0bd87b039a131b",
    "signer": "0x6AAB6EaEa3f7F15750b649C269b0391dcB19dEeb",
    "userId": "92019297"
  }
}