{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "601939963",
    "entityType": "User",
    "nonce": "0x2ac68e73fa743f3917db5a6598ce61a91aa8f97b270afe85f7e74567e4ad7e4f",
    "signature": "0x13bcbf681457d0b90315d42c4dab7d9388dd892ae15406330d4a85285c36fa3722bc169d71c3c075218da49dfdf48a6d4b9cf67cb50f5a33a6059e11c1f3e7fd1c",
    "signer": "0x4E3828bc809fb5B9deb81fa536cF73Dd5bF4eeB2",
    "userId": "185184169"
  }
}