{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "387949683",
    "entityType": "User",
    "nonce": "0x67f25022c26f034670bed07193efda7d39c643f99d875af95a7ec368b07a84bd",
    "signature": "0xdd38d5a0a89df3f0b04705b4be814e5bf79d74247c2b4073aa7950fb6fa8da5415fdf63ce40798ee68cc2889806a4fa2fcf0d1c877ca8840e0f287b7f5dcbf5a1b",
    "signer": "0x4fdc03E53311BF6b1B8728dd0Ae0630bF74176f1",
    "userId": "162770660"
  }
}