{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x99522aa57f5c3cdb44417dd3848933ff739be43ebcfd8588e99272f32567bd12",
    "signature": "0xa78224000f5bf92f7e1d9e44de48f89111fdff223f092cf561754b120afa13ff69490723917c40bdee8fbaef0758ff3b232d7d00cea2718761e23504b33680ea1b",
    "signer": "0x5E8fb659612aDdEcc9Bc5929d68B9DC2F53C5947",
    "userId": "216491227"
  }
}