{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "890889753",
    "entityType": "User",
    "nonce": "0xe71b7d61db6e1c43c950820229c097a41daff5aee95ef544603c36db84a4fcd7",
    "signature": "0x0cdf7f6d63b6ecd32922eb6b1da48d869053dc0b1060e35e6f29b79fbeec7dbe4021b8140df0beb07b1392cd6eeddd9f9d06a248d211bf101d5c8436b025327c1c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}