{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "28421485",
    "entityType": "User",
    "nonce": "0x8e452b282a04715961bdf48bd2b698ed4539fe6d253d5792040fe6b56cea3f82",
    "signature": "0x9134313d121edc8ee021fc4706f93d8748f8e83191ddb1b073c0ba403be049586dfb787044373be082aeb1327b3b7d28e74fa8531ce40b0bb8b9f2611ef9496c1b",
    "signer": "0x793bbEFbb3Cf1e6529B90296e502145aCcCDE8d6",
    "userId": "838777725"
  }
}