{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x5ddfd664dbfdaca5fe57e3fbf49af3640ba5f41a68f4e639ae29db645754b0a2",
    "signature": "0x133f9cb99ecee0d72845eab0b962450a185be384b0b43403918997b6b770574f4f8b1825dc5d4e8e9d76efcb8bf308963b207ed9d7b839d1cb3345d6095385ff1b",
    "signer": "0x0F2FFdA72e91b0F099a154B2451beaCa6E6230d4",
    "userId": "745070052"
  }
}