{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "15642",
    "entityType": "User",
    "nonce": "0x31c11e860925f1979db107506b1e20927404a591c98aa15d9318ff91691ed803",
    "signature": "0xef8c2e801be9b3b7df7f146ca72c53466dc4ce135a0ecbd3611590e0219f58c555d0958686d596241ca12a6dda7147ad1238545c294462c08eb6bbaeac0771a31b",
    "signer": "0x40E8E224E8F8a9f835e4dc8851Da72DCEd75986F",
    "userId": "504092010"
  }
}