{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "813591606",
    "entityType": "User",
    "nonce": "0x23e39e506cc9f5a2811df893e94185ae2a61ee89c14f37b8c0a54db959735d98",
    "signature": "0xd17de5f4808f7d1dbc39ceb6acaa4cf610d4505ed6531061c2f1ddbb760f969e112812acdad424e9a217bfa4675823dfc813a50dfec2a2bd90981acdb30066bb1b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}