{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "650995561",
    "entityType": "User",
    "nonce": "0xd897754cfabec5454930891a120f97fc3b07cd69fcc4283673ce6362963070ac",
    "signature": "0x55b0a0ecb3c1a690314d833b9845563e0fd305515b37145b86997a9726f66bd94320a75cfda53e338dcdda6f10da3ef61fff2133dd2b7b75fe569bff7f94a7981b",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}