{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "309080",
    "entityType": "User",
    "nonce": "0x16ad528cacada010580a5a60c429dc7722e799dde8398e8066066f79e19193a4",
    "signature": "0xacd8123a5184ed9fe6e185cbd2b904ae23beb6783c5aa716b5e7edb8fdf950e5499e2ef54359efb73ca06aaf466da602851acd29b59d7ca1aa858ca6368fe3211b",
    "signer": "0x712Aca9aA6ac07F98dcEC338Be9C15c3Dc47d569",
    "userId": "12730129"
  }
}