{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "623802085",
    "entityType": "User",
    "nonce": "0xaf885cc6324b959af0d3f434c1dafec0841abfd295136190a38923dcb94d0489",
    "signature": "0xd306f70c447196ac551aab8cff546d85f011b8b35cd475e8dd32d3f8bf82c7556f25c593a15d4cb3f70d2be08f0281b15634c211c7ebcd383a4187f685263a4f1c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}