{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1780850",
    "entityType": "User",
    "nonce": "0x0707a34d2991d84fec83f0b1474e64e894c46d2a5e7feba2a46a8a93874c4fc9",
    "signature": "0xd1f72d6c23c91a3d914bcc0018fe320c9857e87cefa89f4ec86aef6a9e7d18f15588a5300b14faf428523c9a71981d2ad59cb28bb55901469dbb08c703b47d1e1b",
    "signer": "0x84B42609E987DD0953e02498E61987fB833B7C92",
    "userId": "887547386"
  }
}