{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "20",
    "entityType": "User",
    "nonce": "0xf296eac6d29054977d571eb6ce5ce5bfb62db30f146c110c7d50999abf9ee795",
    "signature": "0x0ebc74ab28a9573d4462a6bea51cf6fe1ae7ddc6a77122fe9768f107e4ab28c565bab385d3eeae6a4d2f82cfa8fccf1915da605179d9d74a81dd72a8296d51731b",
    "signer": "0xC5Ee9a72D83C8Dae889645372774B75CB639c662",
    "userId": "672251661"
  }
}