{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "475566",
    "entityType": "User",
    "nonce": "0x0c4dc2b762c9071a73fea9b1570077c09b7d0b710a1d9a42b7e5ddc43c667728",
    "signature": "0xc107330717accc7175f562f608664aa3cd980df39fee78fca0611a300eaff9e70b2a2db65116c51aef08a4e724dd3161febd1df7f6a094c8a26d0ab4ccf631031c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}