{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "991821949",
    "entityType": "User",
    "nonce": "0xeec994fdff1dcc1ba6288fdd316035796a10bee64cee0229c5378dc477f05839",
    "signature": "0x9629a04600a836b0192374bb1df17f1c5666aa78dae2aa7a9ebed98e43ef5c0322edd5aff1fbd1172774d3ddffcfea7c23aff46edcb255ebba5e04897dfe706d1b",
    "signer": "0xd367754F1CE503c2D28B6793582BC23fD71eE997",
    "userId": "420647095"
  }
}