{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x89de8c8a46a0b9c07366fee0fc803a1ffc2cb26c6a2ddcb5a64187b3e2870bd4",
    "signature": "0xb732155d970825e752312ba6746eac4a974c36dd67437263da79ea3a764908866e37c551034a10a488f1bebffbff8f2d392a70ea847b1cc1e05e2064b8b562ba1b",
    "signer": "0xdb9977A5208cB1B434129227353B4F67Fdd041ED",
    "userId": "241410986"
  }
}