{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "354696",
    "entityType": "User",
    "nonce": "0xb4dcb22d4c2b588586afe3e90781136af3bbe00f5d776dbb7418b96975184410",
    "signature": "0x74053eb787018a9d6d1c50dd5644272890ab125576f160b316b04b95e3eaccc60c8c94bad42adfbfcb1281a1639070fb6c461260adc53db7cc5559c3848d37ed1c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}