{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "5501",
    "entityType": "User",
    "nonce": "0x63209a6d62d8c8a7fdde85fa296c7665bd90faad015ce7b2c660315e31ab99a2",
    "signature": "0x8feaa94d9b9c0056432e792a3615e091b39e47aa788d92b8323aabb3b0194f873533ed11250d70b0205e4c02d5dea0c3138254a0302488d5e76c3d525be35f031b",
    "signer": "0x08d8b4B98a4aE10Ab809C1409291ab0c1E29D746",
    "userId": "644998197"
  }
}