{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "389780",
    "entityType": "User",
    "nonce": "0x0777172b21faefd2ae7b955947373a11adaabb67f43e6f13427ae85ccdc7bc3b",
    "signature": "0x6d28614e83ea08578b55f90533c5693a6047fff8bc718641eb73c7dceba9c09402f8de081d487c10188adfadb6acd09b231e297c73ccde7ca59f026798fdd6cb1b",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}