{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "212830",
    "entityType": "User",
    "nonce": "0x2852b64af0fdf46188ae2c509c38139a161f2147fa2205361141fed87447958f",
    "signature": "0x23517e30a1a54979cae535144c0f2adcbec43909947dbc6189251211d52f05ba008377ae7d464c3ff025faa5b69e411dc9ad164108c4ccf8974ac5182b43e1d91c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}