{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "815073450",
    "entityType": "User",
    "nonce": "0xd38595c20ebb60bb66c55500658a17d98ca8b30750437b3f2405ddd1bc45b90d",
    "signature": "0xb94558f869c29ce064b8294b1d1f745517936e8685a4fe685ba4f123b65300b6736e1bac8de7563ee8fa00e831cdd3bb55cef6faa3c773ba8d7f8a34bc0d6b4b1c",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}