{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "754276083",
    "entityType": "User",
    "nonce": "0x9b500c3fe288841358c1cf5b6bde8252bdb072d6432a6e7af5f6e8c385194844",
    "signature": "0xdcecbe9462d1d745f5b2e5b004ac3a1c731989ee0124a734a8f9535fd903130c042ab89aa6fdda40e74367d531ff9ed296dddf654742dcb557fa8a50627276e81b",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}