{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x591a43e80577130e93d4ca40db3bcfa51bde0db6da1a4524c265fe79fe2bb5fc",
    "signature": "0x30cf5af8cdded56c733b8617421dd5fd92ff8dff4ff7b8c2f7aac21be0cd9efe75523a806a0b4a011c744b4dc0d38cd87dc25f0e04f3043c84ac2fd5f75269021b",
    "signer": "0xaDAcd694B493000FBA2f099C5b5cE89D1F67267a",
    "userId": "850984408"
  }
}