{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xd2c6768cd1b34012afc1e9d1a0a9143d6454dd798daac59c58a89e17f7fa4753",
    "signature": "0x385538c222aed1ecd2dbb1531357877fdd6189dc91a0102fe46bd3120a6d574601dacfe1e107d41652cdc907cffbd9b819ea3f5063e93bacf1f5883ec35a71941b",
    "signer": "0xcd6e4F197353125a5AbA80145Edf0eaB92cccEB1",
    "userId": "753441541"
  }
}