{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "325624",
    "entityType": "User",
    "nonce": "0x3fbefc07cad370d29ff8505396b02e9ee776665ee8d8bddb64de62936f95e15c",
    "signature": "0x2fdfb5ee36d4c9d8ed9825b7009867467ce4ce65471f9b4a96c40865a2d406860d4f5a9a14f42b6f9daedf223fea6da03f4c14180d42de82e2752885ec89bd0e1b",
    "signer": "0x4950A7c498b6c214e83B79502162b7f248f9e6ed",
    "userId": "499895630"
  }
}