{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "739600",
    "entityType": "User",
    "nonce": "0xb05c41ff2ef178a24cb913b372fe251249b787ab56997e31bf2a7724877d2ecd",
    "signature": "0xa92c8d05889989c2d230e720b70ed6cddbe021d89d58474e645eb52dbbeea2fb7d3e84d189523bd9bdf60bf2f86a54b6d2ce731ee647aeb520759d2e75ec8c1b1c",
    "signer": "0x94e0dDC50579175818AaCFBC9aba8B065fEf2a55",
    "userId": "460147282"
  }
}