{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "737872723",
    "entityType": "User",
    "nonce": "0x6bf162163dff3999ff0e10f77abe728efc8c48714d61d032c1e704c5ec4ae5ec",
    "signature": "0xc3356fee9cbec9303398fe234352f48bb738bc6f7fe0c79db1baf35d7f21171a0b364fe8f8d44eadfa51b7f44720063bed193d14fd9c7f3eb4957c1d1f73df451c",
    "signer": "0xc97A6025Ad8c7Ba1a35Ef7E3A3b88ABc8b2013BF",
    "userId": "666092734"
  }
}