{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xc777283f9ab3f057eb19d6a2c28ef1e440633200cb5c6e287747da38bb5b1573",
    "signature": "0x00f8bf82ef762ec9dc7f23611de3b94654ff8cb71d7596c6f2974136328a4dcc3bad05cd52b2dad68e884fb86e001ac703c20a42f84005806f4d487ec731b07b1c",
    "signer": "0x5452f86EfcB1153FF9C10bdbe4103Ce25434D124",
    "userId": "620307004"
  }
}