{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "337125448",
    "entityType": "User",
    "nonce": "0x1e3f0acfe2189e384a3b348f7c3f379a965452003918d8f60e6d7bcb7823f277",
    "signature": "0x23dfc1a09633282723a3056ff3a925260914fe4c9451273b982021d3cfd8a9e6593ea57364a9849c0f79cecddea3db787a9455402eb3fbc64d121e399bd8d0291b",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}