{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "54197",
    "entityType": "User",
    "nonce": "0x8d41b30c30ddd924b621755d84c4ccafceb406839123afd55692146ae0657eb8",
    "signature": "0xbcf23b296c784062e5745357b43fcf9654bd04e44b4c4b154a7e75fad63e4428690c1aeb83bae61f15e63a1ae76865a6453f095e9a425ebf88e91d87baae38031c",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}