{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "540858563",
    "entityType": "User",
    "nonce": "0xa91aa4a8cc3da78256ac76da7700b689a3d4a7553b9dce032559af12a19a70fd",
    "signature": "0xac9b64147ed75d36f49207edd71f76e6cddc412a92a16cc572c9b412d175b0ad123506fd56ac814fe3d6009957b5369d01bb0e99182fd6d9f271284d218b71831c",
    "signer": "0x2752c6C488Ef240895028c3B2287EeC269C7EC7A",
    "userId": "79019982"
  }
}