{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "3717",
    "entityType": "User",
    "nonce": "0x4b0fb39cf1b89a0c56706c65c164e3b68b9c2fbf55e38203237a9d350070efd0",
    "signature": "0x9995d7f83d3a8b23d00b3e0d8fa9c3990ce96d8e161200df4fc1dadd55bb80bb11ab9a433b02740a89027ba9139478a4bd976d2661dfe6ba29feabea132349271b",
    "signer": "0xc8A7590406e5bC8bBe6D1402a4a96780255Cf3d0",
    "userId": "471711039"
  }
}