{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "307933",
    "entityType": "User",
    "nonce": "0x3ecff2a24ac12dd1cbb5d2e5a07e37b5cbf735077454d8a39203d423e1ce3068",
    "signature": "0x6594f3d5f207d1a93a7b2bf22dfaf09660f43c9138b9718497e720e1331a61da404a7d28893c23996f9e80f1f8735649fcef2d93f46d182820d2296315f2072e1b",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}