{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "256479919",
    "entityType": "User",
    "nonce": "0x1c1573df2e2211df3b29107c096c6e7e5bb8fa634df7c82f759cdc8b578a82fd",
    "signature": "0x1bff72eba9c524ffca9312da7eb06c05b8ca8193df00f044fe00ba68f4068b44342a058a80a94feab5a8f7b341ffe7a3e201bccbae44bc60e76fa4c94e7549751c",
    "signer": "0x793bbEFbb3Cf1e6529B90296e502145aCcCDE8d6",
    "userId": "838777725"
  }
}