{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "24240642",
    "entityType": "User",
    "nonce": "0x18e90063bd201dc7e7ab477b79d4614cbefb48e78f1a6a4c8eae892a1dcb6819",
    "signature": "0xdf934735a90344b0b01a138a60f1311dcb8df0cdf6bd50b51fbf8176f837c97c738929830346c21f024fface008eda0408616ffd31326e423b3cf50e7deee1a11c",
    "signer": "0x16D3bf5a80bAfFB2f1550d49b1203D4CA532DA1C",
    "userId": "1994482"
  }
}