{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "837777538",
    "entityType": "User",
    "nonce": "0xb886c1db5e233bfdacbcd14608e5e320df697f5679cde16be00ae2ff9d5706d8",
    "signature": "0xb060235080e6b8bc76e91e1171c5310c1fcbcaa007ced3c0e8daeedf0240865630b39fa160f53b50e75909439b4efa475af23003aae65eab98fc64d20519c0fc1c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}