{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x2a10e13d3af691aa6518da4724edc8f868bd52995c27c3fe40a040f3ec09ce0d",
    "signature": "0xe81d8fe99dde7798111fdf1c1fefaa1b8e81c66d2f42bdfeb261b1c2b219cb1e035c0b85ddbfe7af302ca6be11e7e1d2cb965a8305c8fce5896e923dee3637b51b",
    "signer": "0x7a05e171dF3C0116c2ccD40B8dcd0772E2ebf46F",
    "userId": "677067292"
  }
}