{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1687304",
    "entityType": "User",
    "nonce": "0x98a76e046624ad7356b0278aceaaff18ff5afa57989a739d2577c15c7ffb8fc6",
    "signature": "0xb13321574d8baa8aef5532d408f0a59aafe49100ae1a49978cc384a575ecfebe4bfeba3d77f037e91910a1e8f80686b802af441b1b3dc4099c22f8e5b14131c51b",
    "signer": "0x4ad870a0C318214b4796d1464BC8Dc57C6b84C12",
    "userId": "408505072"
  }
}