{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1425525",
    "entityType": "User",
    "nonce": "0x1bdd0131b55761a7daf5a3e7c288caac1b4fb6fe3254c70afb65d79684c86198",
    "signature": "0xa00660a9eb25c243db2e37ea931c3849546cb8c9f03704d04936b0731f0218f96e17e85aa3362ad35be2e6c45f44af92fe22bd8eff10442f196fbf768e807a851c",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}