{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "64866",
    "entityType": "User",
    "nonce": "0x786579ec14d123ee95d2327969f4bcfdac4f8b9849d717a51831824e1bb4d459",
    "signature": "0x9675ef264cdc7440a26dbbc7fb60b1b38a7b96915737a6f185b7178684f6b5c541d0de4d2ec0a25dffae8dd8d7e429a1f4086a22c7d3727adfd018c4871a9af81c",
    "signer": "0x793bbEFbb3Cf1e6529B90296e502145aCcCDE8d6",
    "userId": "838777725"
  }
}