{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x73190c14a41e5aeb00440a3f56628b027ecee546b2ea97a67ff09d8d4412fc09",
    "signature": "0xc4d20613b433e9ac3a07b083d75b12667a3a8ee03c59b213149219b057f083a76b6c2b9e4ccdde4cb5f7c71af40226bd24cbdf78be70de84680f40266ec9c2f31c",
    "signer": "0xf76De78678ce1B8409d6e2Cf23533EE6eE3D38CD",
    "userId": "566296412"
  }
}