{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x64d41e8f1fadfe97c0984ffed47ae2d8681131720148a6c19eeef0ee819c5871",
    "signature": "0x644bfb7ddc9657f0e74ef1c4ae1bf88d461ee899d1e0bd4fbcb6eb32afb4c32820378e40338b233fa5a7589e5ddc6efa274bcd0f96341d7d1fa74d1ac6cf96d01c",
    "signer": "0x7615ef995F8D08153944eE41E6F2CA86c2195321",
    "userId": "247710305"
  }
}