{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "390736",
    "entityType": "User",
    "nonce": "0x1ca5c3d119fac0c5ea93de34b5e5d471e37449203301ef2854ca6d8d478443c4",
    "signature": "0x8de0a6657f410da28902dc4e745bafd58dab31fca8f0b70890efff74d6dc8b9b3fa9c7a25d64ba803846ab723ff68952bdbdee7d8e6e24aa35161812b7d3044d1b",
    "signer": "0x7cb443E1D882339Ce2Db89944ef44929E8E2F578",
    "userId": "343301"
  }
}