{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "306850",
    "entityType": "User",
    "nonce": "0x61ce285dcb09e9e446f665bb88416db60f350cedb2eb7f271496668f5dc58cf1",
    "signature": "0x0490d8d7346f28d02ff9dd46a89a2384335fdcc70435ab6ab2d26fdc55b820f4065f857cd9586391a707d8bdd0843057dec0ab4653e97c0c12d3fd2b24aaf56e1c",
    "signer": "0xc97A6025Ad8c7Ba1a35Ef7E3A3b88ABc8b2013BF",
    "userId": "666092734"
  }
}