{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x3b5d54bd8acf30c878f6aedd9e4770084d6e001c52694accb5438a40780c8ead",
    "signature": "0xf9ad1250fa0ba551ee220b915c251005c1d6e2632aaadc763838fe53d73cb0166bd0bf4522afba7776b59911d68c69042368b757ae02c2a75cee64ab4d9152221b",
    "signer": "0x5D927D144603668F0A0c4c1e7c1E0A5013809D24",
    "userId": "411307090"
  }
}