{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "863737863",
    "entityType": "User",
    "nonce": "0xe4411bb1233f1be6f88f6e9041d611e1a12478a26250c5174c9c94a8928e32e2",
    "signature": "0xf76a547d2b24f313c733d49e947c44e56d670233d0f77a816fc6f2eda372fe50000ea9a40ac3f9988fb38d388809c90a6110686acfdd3e51edc46c3910a410041b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}