{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "400171089",
    "entityType": "User",
    "nonce": "0xe5bcc1b2e27e74dd0b5bee857d09c2d1c0ba2aae0e7ab87af6c7765c3c5d7fe3",
    "signature": "0x13493d0f2dce74720304316b110ab4520c62e393765527781518d8e20a98bbcd283ec49ae9b0254a830f366adcded9a0ff1497fde7d9b5ae183be16e6f6f2e641b",
    "signer": "0x1eE9054C1Fbd103C220810Af04980227e57d33E3",
    "userId": "52328655"
  }
}