{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "337206",
    "entityType": "User",
    "nonce": "0x73d1d8e66472db057bda286ea0d97e958be23203d98b23aad2e4705452b2d3ed",
    "signature": "0xaf16ec772c33f8591632d17a2f873e7d89b2ca9ba465f158bba8987c92df3a1b41dc223d5155b5c08c9cd653f34d997d7435eadd3417a0d1ea6457b8ac5650321b",
    "signer": "0x52F331C086a11941E738a6C86d9F127E934dDEB1",
    "userId": "281470566"
  }
}