{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "620307004",
    "entityType": "User",
    "nonce": "0xa74cea34a7b73d596aab98133407122d654170afa1576868085c5ade9ff198a8",
    "signature": "0xe965a503c60eb17fc47de34d0d3602673c53090aa4c01059575efa585509d3796a2f55eb2687c603aff943932097721f751faf0788a64c4a54cca51775b905451b",
    "signer": "0x775bA7FB8a4FF9354c099465ca493BA949FdAca6",
    "userId": "597677270"
  }
}