{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "121458",
    "entityType": "User",
    "nonce": "0x855c6a18222dd54ae1abe833dc3bfaaee73297a3de195bd627f68f483dedafe7",
    "signature": "0x1fedb05b77464204bcbb36531648276490e838292053d7289064dc1e193e39dd2e96fa67839453b75e9453459a53c1a6b7a60ea811fb92e42ae048213c0845a01c",
    "signer": "0x7E7b9c4DAC3F284d889a5bc274eA80b8BA5F63ee",
    "userId": "670307808"
  }
}