{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x312521ca6d974b86e0a9fd7f530acdfedba11ddffe2af955bfdd7d114a5ab91e",
    "signature": "0x35f90eeb15d4092a20073fc82da0701a23bea957184a24fb2743cd43ffbdfe6e0ac271a5518c57af096df4488129f8b4123ae47ab3eb7597ea0e43587d01093b1b",
    "signer": "0x7B499405130cFEFBBaec9980A9E37BBE42E8589D",
    "userId": "633494619"
  }
}