{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "756543713",
    "entityType": "User",
    "nonce": "0xaa3ea48e1cbe41aedd347ea9d26c3581ad300e1fb440ebdbbb675f7a5c25af47",
    "signature": "0xfc48c4d24f80413edc16bec9b9dc4aa9c30b92447d29dce8547dd2295637288b4d373a67696cc21bdd6d008420ba9ff9b9104e4adf74c50785be07122bd93f651c",
    "signer": "0x3Ec98fFA47eF7773803b73964753B99Ae2D50f41",
    "userId": "545926315"
  }
}