{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "490850855",
    "entityType": "User",
    "nonce": "0x10099b74637f01a7a8381be44ca320986fb00a421a04cdddcb30df97df5e3d06",
    "signature": "0x332785d47cdb86bff9a366a2a7d7b5bc96054eeef0702ec94b5e0ae2d4a67ae5288fcd1994e662481b39a7eae033208311df92e7e69a136b868c0633abe205721b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}