{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "308196323",
    "entityType": "User",
    "nonce": "0x341d92f1fee39a92d5ee64ecae90dc59b17046baaa0e3783db7674f341f875f0",
    "signature": "0x20edac4f25777690568e2ba7966d8e8bab3edbee8a2c030c92cbc70da59a05bf1c1bc2ce3108770b2a594dc02e9f4956fe77abd8a2d3a366e946d4c8c53f9c931b",
    "signer": "0x5452f86EfcB1153FF9C10bdbe4103Ce25434D124",
    "userId": "620307004"
  }
}