{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "64159186",
    "entityType": "User",
    "nonce": "0xd3d5912a9df9cb1ae6f73eda7f31b495545c9c4983260fa9a8a1eb656a430148",
    "signature": "0xec08c0eb0cb58202dbf2ed85aae7ca8e17a242ab36dab21e865b3b0ecd259b4f4c78c04078dfaa6a0eb758b4b944cf8cde61ef354795fcc6cb00708a4aad975c1b",
    "signer": "0xbF4F1f4df4779768AfE75515b1552a2Bc5b4Dd32",
    "userId": "100976759"
  }
}