{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "823652912",
    "entityType": "User",
    "nonce": "0x57455a4304bf52f7a48905aeeb3fb79257d83f759ec446a45f6ea928f5a49a57",
    "signature": "0x9b48b5dc0dab80f6a7217186e19e4d8749e95817200c0cac8ca1d62a11f0ad1b7d4822be058585bb8711b07f17670096035dd502ec117ace42f20fd612f1512d1b",
    "signer": "0x248512B4C662c3d750C21fcAfE74C242fB51fD00",
    "userId": "462464309"
  }
}