{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "16497",
    "entityType": "User",
    "nonce": "0xd606d5de47de111f41af4c43c4c252e87cd55f18bab9c8a29389a5974697fce0",
    "signature": "0xecc253d26cea5056209fcbc3f4de2e92d0fad1ee1353ae089b1c192e2fd99eee17fbe14776408cd23f1ca4be824e289984b52ac5f7d02d47bf1db120fe8c0f201c",
    "signer": "0x44BAdCFCf42113CbB67f519e4efa576B336f9bf7",
    "userId": "136844578"
  }
}