{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "146510",
    "entityType": "User",
    "nonce": "0x4a0c4c6bd7bcffe8cdfe04147c443327b7cffb5cf4b701427a98759c10c91f24",
    "signature": "0x3487f75907448368716543708a177784c24dd0c9d3941a52a2aee7eec42ab44849c385d36fadb66a9129281d313605937360ab9201c93839341d8421d9a79d711c",
    "signer": "0xe4C0C440180A628EAF39D8c3fE4aEDBE2CE45aB4",
    "userId": "754624586"
  }
}