{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "544965867",
    "entityType": "User",
    "nonce": "0x8323869df5b67a333f985cb6a673993bfc209ab62d0dde8447275af15c23e33b",
    "signature": "0x1cf3b1d86cb65123431f631a15c56a50b9299b401e70154f32ec14b034ea760b0e8ec6889c839ca65f3e81f8f989c4726c3d59f09bb4d2a2e4d10392c6d2b7831b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}