{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "43430",
    "entityType": "User",
    "nonce": "0xc91f06dba286cbea1b21d22acdaa1041d7ff82eaf626087aac1abd9448d2989a",
    "signature": "0x9123904f3a7eb6b76db22e64a9693741cca2db6fe6f2a94d7f0df9e320db7695646bc2f8eba2c99ad5fdca6d6cc8e87e536c96c6fc964d148d5cc2229f647ca41c",
    "signer": "0x4B03B9450DcE329d16f317309777a1ddDF894705",
    "userId": "74596186"
  }
}