{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "508263176",
    "entityType": "User",
    "nonce": "0x5ccc1eedcd8ffeee4d1c89beaae8f534f25c06842bcc123ad24677934ef7e34d",
    "signature": "0xf9c5b7de8e5060bb2afceea37699c62bb3d5183556358cf38f895020106f20f378e834e0f64a4b9b1755f78f3a2525accf382776abfa9cf91f49a7388dc6e5d11c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}