{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "593392725",
    "entityType": "User",
    "nonce": "0x665ef94f94cfb2d88a02576a00640153c6fdee968a32ed485ea65f7bf09fa9bc",
    "signature": "0x4b6361745c188d0ebe1fa417cc4487cbb6212922cfab97b6379b13e5a603143a2d020dabc1367f681123a296b57d7a50cdc0c8b33f0e38bf53bd5e9d1acb17021b",
    "signer": "0x2F87bb373089af6C75e3362077A0E52A4779f72c",
    "userId": "582715056"
  }
}