{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "345493",
    "entityType": "User",
    "nonce": "0x3e9c0eb627e059e3ec5eeb19f08d33769f10c01c37eb94d54d524efe71df3c42",
    "signature": "0x09f72a087a8fd0630ac2b6d6438540426fefb259b35579f65f24e80f66bf6bbe1d5ec128a80a30b9107e30455ed5711ec3fb76edc30e1811dccf8c93619de9361c",
    "signer": "0x061A60900C738C67bcf3F9Cb7Fe8f703DbEc8Ee0",
    "userId": "718327235"
  }
}