{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "727946613",
    "entityType": "User",
    "nonce": "0x8ce4a2571b48be4ff62ef66615b58791888cf316ef291a3d816097dddf0296df",
    "signature": "0x649cdf2d6d52ac19a6a8ea3bf60a57c15ec2055e811e7c6117399d2aae460ffe21e6ed9394191309030e14f823c059978e5705dba29b5f8869d1536fa38957491c",
    "signer": "0x569a23a5D506E4404139fB7510738Ee5b80F5624",
    "userId": "280440301"
  }
}