{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "545612545",
    "entityType": "User",
    "nonce": "0xaffc6152cd02e4b078d73041f4999b9bb131d42f093e0736a44d3a7150bdb287",
    "signature": "0xe5082c832b222f72e977abcce6877135edf400c66c47381c75e7bef5058e5e890f3276573ff794758c9bb669eb8c25ce2adff4cfaf50c2c4aa2d2d94d69cfa0e1b",
    "signer": "0x672e9a41a6b972AB2eD6BEB1D4a6e4F09dA4C9F5",
    "userId": "302680854"
  }
}