{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "375332",
    "entityType": "User",
    "nonce": "0x8b30e0e85fcd511eb6b6c894aea196fc49416508dfd37b87138fed5a9564dfe2",
    "signature": "0xfc53fc9f87b512c57fb6faf81d122e0af86963dd43225de4c446bfef920f07b6426ba4987a9ccebe7830538d0498b5022ef030277177088f8511a4804abe07941c",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}