{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xf30e4c3244f569bd02780ffada77c15eb997b5e5a6aead7001d784c0379072c2",
    "signature": "0x76a5fba4265aed264bedd5471368838e92f1af42beb6d65e3e34ca4ecd89206d3a6e690e8511ea8dd24fbfc0c81ad614f19e098e90aa518e8f3c33b9291adc1c1c",
    "signer": "0x4086Dda2D91F77cd46De0859a4de37F888508faA",
    "userId": "568518925"
  }
}