{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "728570067",
    "entityType": "User",
    "nonce": "0x44b96f3e479eb809b8415d87ca1eff2e5b33f7e8718e181e43951be6fc8ee2e2",
    "signature": "0x95d08949ca6d99a8d9ab0447d385c6f8f55ff5b7ffbac305a28c80b779b8a4852451f4fbec422394bf82843d1b29ab7ea396d6e776335bc2d218dc94c4ac22341c",
    "signer": "0x59703Be510759288E02691dA4939360e8FcCd725",
    "userId": "38568"
  }
}