{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "440432626",
    "entityType": "User",
    "nonce": "0x1e65f1bca51d946af5253754f78bc079ba189fdf0511ae0c80566c0cb209b9cc",
    "signature": "0xa8c660d06790136cf3831942218d911b49f1fdcf6cd53df7d203f9e688e6550105e900863ab43eb98ca1c52bfbc0c1f05dd9654b6aa8c5b82fb9d142bbf2ba581c",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}