{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "73735",
    "entityType": "User",
    "nonce": "0xc41a9f613d650d70cd47cead1803d9077b77843cd6481857e3eaf3521971e8e4",
    "signature": "0x638aea11d3faa829d65648bfa9531fc940ba4c7da269271bbb5e58ee84b9f539500ca1a2c3c5c9cb9799061d09b0ee29b6ebb542f0e1b6fffac2392c8c624d6d1c",
    "signer": "0xFe4E972E3ec8D8d619816F5644f74CB5bA1B01b1",
    "userId": "219239808"
  }
}