{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "638733607",
    "entityType": "User",
    "nonce": "0x7955e6010e7d27aa63bfa28500b641389fb50aa9f4e8e823bf19bdc59cea257b",
    "signature": "0x47a6e255989cd9066f0efe343b37997724ae9a20b3ea24f4ddba1200b2f6be7e0d3107b9eb15416b8aebd489bb64ea8c763887054f11c4ef7199e2ba59c0244a1c",
    "signer": "0x793bbEFbb3Cf1e6529B90296e502145aCcCDE8d6",
    "userId": "838777725"
  }
}