{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "839719864",
    "entityType": "User",
    "nonce": "0x8bc80a90edc6b170f32d39338cff090500f72e4530ae305459db4ef16676ab0e",
    "signature": "0x90e75f125af590240dca705e44609e3279fcdacc22491b534c8d0e01a3cf841f4856406e2a73bb226a6000926f1edbeced0b0f015a049987aab62db3a58586971b",
    "signer": "0x3c154BbB8f1ac3df4a7721Eef2A2198c385D2a85",
    "userId": "587797478"
  }
}