{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "149153309",
    "entityType": "User",
    "nonce": "0x710bb7dfc46b59308a6150ac1a89990ef0c72a898fff57427c67f4315c72f419",
    "signature": "0xcf1351c398b38161387d1c7f6953c882bf6647b8af4eee096209d448dc22fac731fa95d57f3c8ef9ff44f3598c4aefd34dadd7ad8878277e4d544b8b5ef527441b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}