{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "978580446",
    "entityType": "User",
    "nonce": "0x6c732f101b45e5541390c74a0aa61d340e7f7d96dadab2596499f87096e11ecf",
    "signature": "0x957a3d47ac0534d6d191439c7d289c7a39a74d944d8b4cb7f5fdf5ea30596ad4267f26fbfd1e5010b5c1314ea00be4ec69c2685dfd26a4563b2f10c4562db8001c",
    "signer": "0x45c4f1dcE13eeF476C74C5758696D56137253980",
    "userId": "824478223"
  }
}