{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x974e4cd87b0c5a41f2537d31c2fa9668c4f4e99736a69f10b33998e71d0206b6",
    "signature": "0xb36051d166f775506a90ecd7bfd399b6530e76e3e0bc642ff17156ee3f7d24c4434fe4c8ed4f49cc9227878141db2a46dbbb7f87f8466f1727b34cfe1a8892511c",
    "signer": "0xd4172DACb313eb72C6Ee29bc685450908f4A1926",
    "userId": "407046354"
  }
}