{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x1d6352bbfb7c95aec1297743eabd7f409a58cb668dc26a324b367ec848cfac15",
    "signature": "0x687227540549e0873754d792ab36b74ee2130f71988d026cd63dc6c5113f7bba3f72485b77001500e83a0134c811b618d5c3cff86cc3c3443142b3836e27c3a31c",
    "signer": "0x529d298fcA9C8cd0aAb86E13daf70CD4d26f2840",
    "userId": "742845649"
  }
}