{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "839739705",
    "entityType": "User",
    "nonce": "0x90078653a7fb29f2828a6be3b5ad47f38d27d09bd6a5fa992046f9671de6fbb4",
    "signature": "0x8931e7119f66516243e8e22db88f1b9f89e5d12add4469aec970cac960958dbd1aff80521a4516de9659c97294b4bb16c20946d8bac8c8e22290904b9750879b1b",
    "signer": "0x793bbEFbb3Cf1e6529B90296e502145aCcCDE8d6",
    "userId": "838777725"
  }
}