{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "68907",
    "entityType": "User",
    "nonce": "0x3661562dd74866cd3acec684b0049415c6fd0be84ee431067a21566952ac464b",
    "signature": "0x7f856c771104f9e2630fc0e922c3370a751522813b4baa494d2609afbb6773945e3f4b5d5e077f4a77b42b73f3589beff2f2e090ccb9f7d0dd98733f359a81021b",
    "signer": "0x45c4f1dcE13eeF476C74C5758696D56137253980",
    "userId": "824478223"
  }
}