{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "50672",
    "entityType": "User",
    "nonce": "0xb5722cf406a59941059c78239be2c3668535a062f309079154759f6e79368928",
    "signature": "0x2ca91cb8a9b32265a86c5d28236c69c9eb19a76ce5727eafddf4f6064d90c606283c81eba324ca06c3430a9d68336c57c962bd6cc368646bde7552dd488d44a91c",
    "signer": "0x4B140b61EB41438Cda0Dd10473ad1334309C1b97",
    "userId": "45511108"
  }
}