{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "4464",
    "entityType": "User",
    "nonce": "0xf5409b88ee018fa1b4a58f7b1ddc6cb3beb0e082c266548358480498d0e3ca9f",
    "signature": "0x265965ae530212de3904ad797893f5daf1ffbc5b16f4ccd8d4b2978034d51c3c66ec74d1178879c20d95130504e9964b32dfd2c08d8e4df8141d9142a3acdb2a1b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}