{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "41804",
    "entityType": "User",
    "nonce": "0x21c8050028430011dddbbef06c08c58b7b146299aa58617b71eb17737a7bc4ec",
    "signature": "0xaa8841e189bce2d8bc27f9d85a5bbb0d7794e1676e6c3d33e17f883c91d0a68e453dc50a43d707ecc61f6dbd781cbae22269064b3b67f71e18f3e08dfb2af9391c",
    "signer": "0x25F75388E502B5F033aa0b5b599B14D0F0f75a4a",
    "userId": "357543587"
  }
}