{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "499031899",
    "entityType": "User",
    "nonce": "0x0fc3bd4d69758eea3ca897da2f91b837b82d0c4e5e7367de4928236a967669e5",
    "signature": "0x902bf0ba8e60da4599693a24ac41273ae6781cc4fe633af97639a30f020cdb71057f32e61423a54ad97ac675bfd8a1b436c8a8bb801a79f51b8ffed65c4e082d1c",
    "signer": "0x36366012e180e5d6378407bEE6206Afd139E5985",
    "userId": "266556517"
  }
}