{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x7a58a8fba77990dcf28ff07760f89cefa8a4de41d85d3132af766358f057ce95",
    "signature": "0xfc489126010ff622613752088b2c90a267635dd49499cdfbaf1cb8884046d32007931dd3d2cb8d6bf1785c5fa48e913b353dd3bc371130c3632c4d7c0daf95461b",
    "signer": "0x9dF138917EadE34623A5056348b85D88c667b62e",
    "userId": "810972671"
  }
}