{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "142719",
    "entityType": "User",
    "nonce": "0xa8a7d6852764085d13be882268e7421ee896acbc6abd47b0e59faf767fff9358",
    "signature": "0xe68e1f0d03e2bf2f352ee87514549a1710f98cb4787651322aa7a8717f2518e02813a3d55a5382105066f3805c2a9fd3c98d8d9d3884972c1272e8455c0ec84d1c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}