{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "124798",
    "entityType": "User",
    "nonce": "0x2e0633e20c2b7f610a5bd05e1fb00c87e988fbe8a8762d7bc0d2a4374be87a90",
    "signature": "0xf6737f01dfc3634620a43900c13fbe218593c7433cd7d01797aa46252f35abec2b375838090d037a8e952930cd4c064cde4ea11e1b1521f84033e816f39e965a1b",
    "signer": "0xD24271e3B8CCFB603860EA392E94eD5AE2538703",
    "userId": "456716469"
  }
}