{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "943748539",
    "entityType": "User",
    "nonce": "0xcad902b3c345cd54f0cbf97b8ab8ce99d94b8f95aa56bba645eb93c44ba7fac7",
    "signature": "0x40a5e99f64b3c579850472b64e374469c110010d81cc6a85ad3a112be4163f183215fd7368b5d243616111e46282e04cc09a4ad53ab01c816a495a1c3dddcacf1c",
    "signer": "0x176e72dFeDc28F932BeC73B513ff006a4b45dDa2",
    "userId": "93920271"
  }
}