{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "234183",
    "entityType": "User",
    "nonce": "0x6a2bd8fa61f32d85c07b3113cdd2fa1b580e072127b13c6a356e8f6f99a77730",
    "signature": "0x3d6fab093cbebdcba7c1b690130c3d46605bee4118a27606e3a21444dc15eb465993c1d591e90c6e4516320dcc770fe3087a10110df5c3d4f1a5ab7a3965af891b",
    "signer": "0x712Aca9aA6ac07F98dcEC338Be9C15c3Dc47d569",
    "userId": "12730129"
  }
}