{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "618",
    "entityType": "User",
    "nonce": "0x8e825a8090cb2d1c26feaee6db0530bf3bd1f1c94f5551040935cb64cbdfe1ae",
    "signature": "0xe7f34cc6ce9a9ae35fc0813117bfc5e615b603b42d9a002fdc602921b18fc82a6ef2b373eaee3e2dd9cd200e51bc94690e81e2a50dee6f9d2d3ece5464ba8d401c",
    "signer": "0x5452f86EfcB1153FF9C10bdbe4103Ce25434D124",
    "userId": "620307004"
  }
}