{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xe524a3c749c8005e319713e91ae38f8d456cefec0eb9766429dd5acb95ebf0a2",
    "signature": "0xc408798ddac1af37af07045986f5f74c07c1f93f4371b55d5bc4455fbfb80d6720a9fd8f75c2b8db62ed7c7222c32bba723cada5aa309141c15fedbcf84a8cec1b",
    "signer": "0xF468F3BA4645DBF901c04Eb471B2eDe9A63eC5e7",
    "userId": "346369698"
  }
}