{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "354640",
    "entityType": "User",
    "nonce": "0x825b43393beef375f1c1ebb7957ecd18349773b947b7608b4559f5f2b81c7110",
    "signature": "0x48cb9b481001b44ae76908e486b3155a37c2a75a24e2e869f59645f2176e6f8112b87340e6202d837c1e89399f7b46f136fd8e016231e796c2ab01605040eab01c",
    "signer": "0x2BD0c2111290EB20B2843e8b1c0f25aA5cd52a6f",
    "userId": "618242981"
  }
}