{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "437224383",
    "entityType": "User",
    "nonce": "0x604d6fd9e7d0ed9715021715f5e327e3928ea5fb351ac548067ec675c60cfbc6",
    "signature": "0x317d15eaafcc2f62c4322afafac2a47b9465ba18e99ab623adf7ebae38e206fe4c5c097c53685b48e20f4332ad139013c3735281ccbc2488e874c3b2a636d34f1c",
    "signer": "0xb7C7a8D9d12EBd1Cd438cB065E97280E6D7e912A",
    "userId": "984691913"
  }
}