{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "10449019",
    "entityType": "User",
    "nonce": "0xfc1bb1989d1abae7c8a2a22af1cf0df33be7d1b5babce2d95f1103a997d0d851",
    "signature": "0x1f60c07135014c3d6f56b1295d69e72b676ddae7ab9d5520507b55d140f337100f383d0a634f3f945ea93d5994f6e73c36f6e4381da154c961d4a1f21ee300ba1b",
    "signer": "0x0E6Ef8dF2F401D8918d603B82ef321D94A721556",
    "userId": "648802251"
  }
}