{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "991877005",
    "entityType": "User",
    "nonce": "0xb5875b314cd0f1442fc03d55b0ffd110bf4f7260b268fddf48fa39d7fef5dd0d",
    "signature": "0x45cf4b9ba2d3bc5ebaf9335e1ddcd5b6e3b1a82f1a81878015030e375f9e8f5343826873cd6cf78d8731c03e5d292f26d719c3b367d26333ff6304329a63c40e1c",
    "signer": "0x316933E449A0b429014E405447c447C9Bc472bE9",
    "userId": "451684863"
  }
}