{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "50623",
    "entityType": "User",
    "nonce": "0x49d666562f2308bab25c48b7c0459f48db03112d23aab9916b7f8d4d23fa941c",
    "signature": "0x28b7f5501970cb2e22273a1f5d3b6aab1a2fd5438c213dcb8587a38cb037ed6d210592930252cd5dfadd4160ee4a89a03086e4f1b4081846bc9fe39f28d7eb211b",
    "signer": "0xa899e54a1aE2f8D645E14e3E1EBF6398971ece5A",
    "userId": "906687997"
  }
}