{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "601282125",
    "entityType": "User",
    "nonce": "0x8d5e0ff6553767ab99d70be07510197e33e2ef025ba7347a6104c3fc97054784",
    "signature": "0x875c4d511f433af414dad80cc94fced49bf6cc8316bd101fa6b524c0e9d25972737fc8fe07755fbbf0540d32400440ec290f09eaa7c9e125a564a3bf7590af271b",
    "signer": "0x5f669126A64334710E37f472BfBfE0D8cF408577",
    "userId": "171892"
  }
}