{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xe04b3079923f4a60f7ef9176e53fac40167286d91f3555f344dcdc22100957ec",
    "signature": "0x516c9ca27a9ffec4829483dfe6cec49bd73be32cfc1e94be19c74a4c1141c11f41a2e8825bddd1df3ebd9b1bdb172ef984993cd988615779540f4801971fde7f1c",
    "signer": "0x7fdeEB144300AC6b1Be0E83d8f006b2D3140F73D",
    "userId": "325377357"
  }
}