{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x274da9b0cacf2e3406c35842a998f220e81c4aea615f20ca16e017c5894b8ba0",
    "signature": "0x1448e08fc8724ee4063ba6ee4413c806b345732e0c008040163d4ca1ac571a016f28c48d104957f973be4d1cced669337549e9d06737b18f36c0f7c30fe0b5bf1b",
    "signer": "0xab1BF40Da0c24f88F1Bb2c6D83485B0cF44e31B7",
    "userId": "896201561"
  }
}