{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x5993f12b0d5e9645e120a9f3364fa9d7378518a525ec0ba58927c4c5271c0535",
    "signature": "0x1cb223808d95ce53ef06e85f82f43fba86cb58525739d7edd63b85855f26a7e960e4109bb46548801c8f168b7070300d72775555095eb6ab733cb170d29961251b",
    "signer": "0x1788E4C39d3326e598F16767C69826869594E359",
    "userId": "116504833"
  }
}