{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "6884",
    "entityType": "User",
    "nonce": "0xdc48f42634de6b2a8f0a651959be5d0769ce9f86d482cc3dfea340f0dffb8c23",
    "signature": "0x990aa680adcbf56a9c37c2ba8be1b2917efd77d8da145f94db9e1fcfebe6deb45fff69fdb37549cfdc64e9402cc6590baa3a86aba15de02fa5415c0698b3f02a1b",
    "signer": "0x5452f86EfcB1153FF9C10bdbe4103Ce25434D124",
    "userId": "620307004"
  }
}