{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xa34efc4870a821f5f4388705a2ac31f7b4426f2e118f6ea5de176911a76726b6",
    "signature": "0xb636a97e9916a109e92d3335096979141dcd44feb369ab5142805ae713066c252d1ac6bbb8aa2fb3d5a6bf50910dd0a3da2541aa57e4446f4f429f27f893d52e1c",
    "signer": "0x238783C13a799296C61E29498267a388fA66eAfe",
    "userId": "39725341"
  }
}