{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "581700621",
    "entityType": "User",
    "nonce": "0x168c55e3bddc62515a6758ae323760cb4b41c132d8c43e4542723bb81d4fd919",
    "signature": "0xe478f56107cef275cb9817529281005928cb5891669e328d3aa44ec04a9a4a5e3f1f7fdec959f3edc462993f5a4aac6ff7e799bc73efb63443460c10e9d9bb621b",
    "signer": "0x793bbEFbb3Cf1e6529B90296e502145aCcCDE8d6",
    "userId": "838777725"
  }
}