{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "4530",
    "entityType": "User",
    "nonce": "0x3f128e783eb3735d5ef64f5870cd4d39dd8cefde8d0712f3c2f9fa3ce750f3eb",
    "signature": "0x7cc1110927271553231ff80bb14b05d669905112067fbe536a067bf15f3efa7370562f8e5ea89cbe29257ffc5c6ad986f76db4a4c619e6df28dc2d6864f03e401b",
    "signer": "0x6754A920da1003d0904BdFf228A6E217Cd12bF5E",
    "userId": "105562689"
  }
}